Blockchain, smart contracts, and the Internet of Things (IoT) are essential technologies for business process re-engineering supply chains in era Industry 4.0. The agricultural food chain is one research areas where these disruptive can play a crucial role automating processes, providing real-time goods monitoring, securing transactions. With help blockchain, IoT, product’s health environment b...

The article examines the concepts, legal nature of smart contracts, as well advantages and disadvantages contracts a basis for ownership. technical aspect concept contract is considered. Models using are described. Approaches to determining presented. It concluded that two models must be considered when contracts. first model external, program code does not replace agreement, but only automates...